NICER observations reveal that the X-ray transient MAXI J1348-630 is a Black Hole X-ray binary

Abstract

We studied the outburst evolution and timing properties of the recently discovered X-ray transient MAXI J1348-630 as observed with NICER. We produced the fundamental diagrams commonly used to trace the spectral evolution, and power density spectra to study the fast X-ray variability. The main outburst evolution of MAXI J1348-630 is similar to that commonly observed in black hole transients. The source evolved from the hard state, through hard- and soft-intermediate states, into the soft state in the outburst rise, and back to the hard state in reverse during the outburst decay. At the end of the outburst, MAXI J1348-630 underwent two reflares with peak fluxes ~1 and ~2 orders of magnitude fainter than the main outburst, respectively. During the reflares, the source remained in the hard state only, without undergoing any state transitions, which is similar to the so-called "failed outbursts". Different types of quasi-periodic oscillations (QPOs) are observed at different phases of the outburst. Based on our spectral-timing results, we conclude that MAXI J1348-630 is a black hole candidate.

arXiv comment12 pages, 8 figures, 1 table, accepted for publication in MNRAS

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Cited by in corpus (35)

• A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
• The black hole transient MAXI J1348-630: evolution of the compact and transient jets during its 2019/2020 outburst
• The NICER "Reverberation Machine": A Systematic Study of Time Lags in Black Hole X-Ray Binaries
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• The evolution of the corona in MAXI J1535-571 through type-C quasi-periodic oscillations with Insight-HXMT
• Measuring the distance to the black hole candidate X-ray binary MAXI J1348-630 using HI absorption
• NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630
• Modeling the kinematics of the decelerating jets from the black hole X-ray binary MAXI J1348$-$630
• Variability and phase lags of the type-C quasi-periodic oscillation of MAXI J1348-630 with NICER
• Detailed analysis on the reflection component for the black hole candidate MAXI J1348-630
• NuSTAR monitoring of MAXI J1348-630: evidence of high density disc reflection
• Discovery of a recurrent spectral evolutionary cycle in the ultra-luminous X-ray sources Holmberg II X-1 and NGC 5204 X-1
• The hybrid radio/X-ray correlation of the black hole transient MAXI J1348-630
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• Broadband Spectral and Timing Properties of MAXI J1348-630 using AstroSat and NICER Observations
• Insight-HXMT Study of the Inner Accretion Disk in the Black Hole Candidate EXO 1846--031
• Long term variability of Cygnus X-1. VIII. A spectral-timing look at low energies with NICER
• Peculiar disk behaviors of the black hole candidate MAXI J1348-630 in the hard state observed by Insight-HXMT and Swift
• NICER observations of the black hole candidate MAXI J0637$-$430 during the 2019-2020 Outburst
• A Comprehensive X-ray Report on AT2019wey
• Fast transitions of X-ray variability in the black hole transient GX 339--4: comparison with MAXI J1820+070 and MAXI J1348-630
• Time-lag between disk and corona radiation leads to hysteresis effect observed in black-hole X-ray binary MAXI J1348-630
• Timing Analysis of a New Black Hole Candidate MAXI J1803-298 with Insight-HXMT and NICER
• A multi-wavelength study of the hard and soft states of MAXI J1820+070 during its 2018 outburst
• MAXI~J1348--630: Estimating the black hole mass and binary inclination using a scaling technique
• No Need for an Extreme Jet Energy in the Black-Hole X-Ray Binary MAXI J1348--630
• A moderate spin for the black hole in X-ray binary MAXI J1348-630 revealed by Insight-HXMT
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• Multi-band power color-color diagrams of three black hole X-ray binaries observed with Insight-HXMT
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